Oil slick removing equipment for water tank

The utility model provides a water tank oil slick removing device which comprises a base installed at the upper end of a water tank and an oil removing mechanism arranged at the lower end of the base and used for adsorbing oil slick, the oil removing mechanism comprises a transmission wheel installed on one side of the base, a supporting plate arranged at the lower end of the base, a first driven wheel and a second driven wheel, and the first driven wheel and the second driven wheel are adjustably installed on the supporting plate. The first driven wheel and the second driven wheel are adjusted through a first electric push rod and a second electric push rod correspondingly, and when the second electric push rod drives the second driven wheel to contract, the first electric push rod controls the first driven wheel to stretch, so that the descending length of the oil removal belt is increased, and grease at the bottom of the water tank is absorbed; when the first electric push rod controls the first driven whe